Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 154 · 40 questions

The fast method (Casting out nines): Find the nine-check number of each number: add the digits until one digit is left. Do the same sum (× or +) with those digits and shrink the result to one digit too. Shrink the given answer. Different → wrong. Same → it passes the check.

1. 1.Check with nines: 38 × 61 = 2320. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 70 × 38 = 2660. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 816 + 652 = 1464. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 587 + 976 = 1563. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 98 × 65 = 6374. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 67 × 32 = 2144. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 540 + 859 = 1393. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 318 + 304 = 622. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 440 + 154 = 594. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 80 × 80 = 6400. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 235 + 174 = 403. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 303 + 466 = 771. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 389 + 379 = 771. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 37 × 29 = 1073. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 462 + 968 = 1430. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 42 × 96 = 4032. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 92 × 64 = 5891. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 65 × 30 = 1943. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 26 × 52 = 1356. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 644 + 798 = 1444. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 29 × 27 = 781. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 689 + 652 = 1345. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 66 × 24 = 1577. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 91 × 29 = 2647. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 811 + 247 = 1063. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 28 × 73 = 2044. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 84 × 12 = 1008. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 22 × 23 = 506. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 96 × 92 = 8832. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 261 + 163 = 422. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 36 × 85 = 3060. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 79 × 12 = 940. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 74 × 32 = 2362. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 518 + 283 = 803. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 23 × 53 = 1223. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 640 + 292 = 937. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 790 + 264 = 1054. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 245 + 878 = 1123. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 74 × 21 = 1561. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 72 × 97 = 6984. Correct or wrong? (a) wrong (b) correct

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths